From Greek: para allelois beside one another. Lines are parallel if they lie in the same plane, and are the same distance apart over their entire length. Try this Drag any orange dot at the points P or Q. As the line PQ moves, the line RS will remain parallel to it. Parallel lines remain the same distance apart over their entire length.
It is important to know whether the cancer has got into the lymph glands because they are one of the main mechanisms by which the cancer can spread to other parts of the body. As long as the spread is just to the lymph glands near to the colon then this would indicate Stage 3 cancer.
Lymphoma is a group of blood cell tumors that begin in cells of the body's immune system. In the United States, about 79,990* new cases of lymphoma are diagnosed every year. In lymphoma, cancer cells are found in the lymphatic system, which is comprised of the bone marrow, lymph nodes, spleen, stomach, intestines and skin. Because lymph tissues are present in many parts of the body, lymphoma can start almost anywhere. Normal lymph nodes are tiny, beanlike structures that trap cells containing poisons and waste materials.